Hi I believe what you have here is a Trimble / Nortel box rather than a TBolt - is this correct?
If so there are a number of differences in what you can and can't do with LH. Also since it's a different design, the filter is set up differently. That said, it should show lock, sats, dac voltage, and status correctly. Bob On Jul 12, 2013, at 3:56 PM, Jim Sanford <wb4...@wb4gcs.org> wrote: > All: > My Nortel receiver has been running for 6 days now. I am running the Lady > Heather software, but also have TBOLTMON. It shows my position fairly well, > but I have seen a negative altitude, and am currently seeing 1565' altitude. > Based on local maps and the GPS in the car, I believe the antenna to be no > higher than 1280'. I get lock with 4 to 6 satellites colored green. I have > seen PHASE LOCKED, but am currently seeing "recovery mode" and the LOCKED LED > on the unit is flashing, which I think I remember means recovery. > > I have several questions: > 1. Sometimes position is displayed in yellow, sometimes in white. What is > the significance of the color? > 2. I see TC 100.0 sec, DAMP1.200, GAIN 1.2 Hz/v, INIT 3.00V. When I go to > KE5FX site, his values for TC, DAMP, Gain and INIT are very different. In > particular, if DAMP is damping in a control loop, I am not surprised that my > very overdamped unit is not locking. Question: Are these parameters that > will converge, or are they parameters I should try to set? The heather.cpp > files suggests that they may be settable, but does not say how. > 3. On my plot, I see an RMS value in green, which suggests to me that > something is happy with the DAC voltage, even if very different from John's. > The scale is 100000uV/div which suggests to me that it is NOT locked. > 4. On my plot, I see an RMS value in yellow, which suggests to me that the > temp is OK, but the scale on temp is growing.... at the momoent, 10mC/div; > John's is 50 mC/div, but a much smoother plot than mine. What is this > telling me? > > ROM,RAM, OSC, FPGA, POWER, EEPROM, ANTENNA, ALMANAC, DISCIPLINE, SAVED > POSITION status are all OK, even though altitude is bad. > Can anyone help me understand what I am seeing, and in particular, why it > won't lock, or stay locked, when it is seeing good sat signals? > > Thanks! > Jim > wb4...@amsat.org > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
